Add TTCN3 STP_Tests_IPA.TC_tmt_broadcast
The broadcast traffic mode was implemented for both M3UA and IPA in osmo-stp in libosmo-sccp.git af55d4a4a4368d20bc395a5c4712a612b7d954d7.Test already exists for STP_Tests_M3UA, but it's missing in IPA.
This task is a reminder to add the test. Steps:
- Copy and adapt the test from STP_Tests_M3UA similarly to how it was done for TC_tmt_override and TC_tmt_broadcast.
- New ASPs and AS need to be added to docker-playground.git's ttcn3-stp-test/osmo-stp.cfg with broadcast traffic mode configured.